Report 📊

Summary

The analysis of Gradle build performance between varianta_gradle_9_2_0 and variantb_gradle_9_1_0 reveals minor differences in build times, with varianta_gradle_9_2_0 showing a slight improvement. The mean build time for varianta is approximately 539.9 seconds compared to variantb at 542.4 seconds, a decrease of about 0.47%. Configuration times also show a marginal improvement in varianta with a mean time of 64.49 seconds versus 65.92 seconds for variantb, reflecting a 2.17% decrease. The most time-consuming tasks across both variants include :build-logic:convention:compileKotlin, :core:account:kspDebugKotlin, and :core:analytics:kspDebugKotlin, with varianta generally performing slightly better. Memory and CPU usage are nearly identical for both variants, with maximum values reaching up to 11.59 GB and 100% CPU usage respectively. Garbage collection activities are also comparable, with total collections close between the two variants.

Detailed Report

1. Build Time Comparison

  • Overall Build Time:

    • Mean: varianta: 539.9s, variantb: 542.4s (0.47% faster in varianta)
    • P50: varianta: 537.0s, variantb: 541.8s
    • P90: varianta: 560.1s, variantb: 566.9s

  • Configuration Time:

    • Mean: varianta: 64.49s, variantb: 65.92s (2.17% faster in varianta)
    • P50: varianta: 63.81s, variantb: 65.60s
    • P90: varianta: 69.06s, variantb: 70.41s

2. Task Type Differences

  • Top Time-Consuming Tasks:
    • "org.jetbrains.kotlin.gradle.tasks.KotlinCompile": Mean times are identical at 1604ms for both variants.
    • "com.google.devtools.ksp.gradle.KspTaskJvm": Slightly longer in variantb with a mean of 2727ms compared to 2719ms in varianta.
    • "com.android.build.gradle.internal.res.LinkApplicationAndroidResourcesTask": varianta is slightly faster with a mean of 2135ms compared to 2107ms in variantb.

3. Statistical Patterns

  • Tasks such as :build-logic:convention:compileKotlin and :core:account:kspDebugKotlin show better performance in varianta across mean, P50, and P90 metrics, suggesting more consistent build times in varianta.

4. Process State Analysis

  • Kotlin Process State:

    • GC Time: Both variants show minimal differences, with varianta at 0.49 and variantb at 0.50.

  • Gradle Process State:

    • GC Time: Identical at 0.21 for both variants, with a slight increase at P90 for variantb.

5. CPU & Memory Usage Analysis

  • All Processes:

    • CPU Usage: Maxed at 100% for both variants.
    • Memory Usage: Max of 11.59 GB for both, with slight variations in P50 and P90 values.

  • Build Process:

    • CPU Usage: Slightly higher in varianta with a max of 97% compared to 96% in variantb.
    • Memory Usage: varianta uses slightly more, peaking at 5.84 GB compared to 5.80 GB in variantb.

  • Build Child Processes:

    • CPU Usage: Nearly identical, peaking at 96%.
    • Memory Usage: varianta uses slightly less, with a max of 4.81 GB compared to 4.86 GB in variantb.

6. Garbage Collection Analysis

  • Total GC Collections: Very close, with varianta at 165 and variantb at 168 collections.

This analysis highlights the minor improvements in build performance and efficiency in varianta_gradle_9_2_0 compared to variantb_gradle_9_1_0, particularly in configuration times and some key tasks, although both variants show similar resource usage and garbage collection metrics.